VI CONTENTS. 



PAG* 



Magnesia, 22 



Manures, use of, .... 49 



Manures, three kinds, 50 



Manures, vegetable, 51 



Manure tank, its value, 3 



Manures, mineral, 67 



Manure made by fattening stock more valuable than that 



by growing stock, 82 



Mode of making the most beef or mutton from a given 



weight of food, 82 



Milk, how obtained in the largest quantity, 83 



Milk, how obtained of the best quality, 83 



Milk, designed for butter, 83 



Milk, designed for cheese, 84 



Nitrogen, 18 



Non-azotized substances, 19 



Night-soil the most valuable manure, 58 



Nitrogen of manures changed into ammonia, 61 



Nitrate of soda, 67 



Nitrogen gas, how made, (A. 5) . . 88 



Nitrogenized or nutritious elements, . . . (A. 47) . . 106 



Non-nitrogenized, or elements of respiration, (A. 48) . . 100 



Object of the farmer, 13 



Oxygen, 17 



Oxide of iron, 23 



Oxide of manganese, 23 



Oxygen gas, how made, (A. 4) . . 87 



Oxidation, (A. 11) . . 89 



Proportion of organic and inorganic matter in vegetable 



substances, 15 



Potash, 20 



Phosphoric acid, 25 



Proof that plants take up carbon and give out oxygen, . 29 

 Proof that water contains only hydrogen and oxygen gases, 34 



Productive and barren lands, 45 



